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Multiple Choice
Which of the following reactions is an example of a nucleophilic substitution reaction in organic chemistry?
A
SN1 reaction
B
Diels-Alder reaction
C
E1 reaction
D
E2 reaction
Verified step by step guidance
1
Understand the concept of nucleophilic substitution reactions. These reactions involve the replacement of a leaving group by a nucleophile. They are characterized by the attack of a nucleophile on an electrophilic center.
Identify the types of nucleophilic substitution reactions: SN1 and SN2. SN1 reactions are unimolecular nucleophilic substitution reactions, while SN2 reactions are bimolecular.
Examine the given options: SN1 reaction, Diels-Alder reaction, E1 reaction, and E2 reaction. Determine which of these involves a nucleophile replacing a leaving group.
Recognize that the SN1 reaction is a nucleophilic substitution reaction. It involves a two-step mechanism where the leaving group departs first, forming a carbocation, followed by the nucleophile attacking the carbocation.
Understand why the other reactions are not nucleophilic substitutions: Diels-Alder is a cycloaddition reaction, E1 is an elimination reaction involving a carbocation intermediate, and E2 is a bimolecular elimination reaction.